C1095

Step 1: Perform visual inspection of ABS pump motor wiring harness and connectors for damaged wires, corrosion, water intrusion, or loose connections. Check connector terminals for bent pins or green corrosion.

Step 2: Locate ABS pump motor relay and test it by swapping with an identical relay if available, or test relay with multimeter for proper coil resistance (typically 70-90 ohms) and contact continuity when energized.

Step 3: Disconnect ABS pump motor connector and measure motor winding resistance with multimeter (typical range 2-5 ohms). Also check for short to ground by measuring resistance from each motor terminal to chassis ground (should be infinite/open circuit).

Step 4: With pump motor disconnected, check for supply voltage at motor connector when ignition is on or during ABS activation cycle using multimeter (should see battery voltage 12-14V). Check ground circuit continuity to verify less than 0.5 ohms resistance.

Step 5: If all wiring and motor test within specifications, perform ABS control module output test using scan tool active test function to command pump motor on/off while monitoring current draw (typical 5-15 amps). Excessive current indicates motor failure; no current indicates control module driver failure.

Step 6: After repairs, clear codes, perform test drive including multiple hard stops from 30+ mph on safe surface to verify ABS function, then re-scan for code recurrence.